BIOD331 Pulmonary Disorders Finals Exam (Qns & Ans) 2026

BIOD331 Pulmonary Disorders Finals Exam (Qns & Ans) 2026

1. Which of the following pathophysiological changes primarily
occurs in asthma?
 - A) Airway remodeling
 - B) Alveolar destruction
 - C) Pulmonary vasculitis
 - D) Eupneic hyperventilation
 Correct ANS: A) Airway remodeling
 Rationale: Asthma causes structural changes in the airways,
including hyperplasia of mucus glands and smooth muscle,
known as airway remodeling.
2. In patients with COPD, what is the primary mechanism of
airflow obstruction?
 - A) Loss of elastin in alveolar walls
 - B) Excessive mucus production
 - C) Inflammation of the pleura
 - D) Fibrosis of bronchioles
 Correct ANS: A) Loss of elastin in alveolar walls
 Rationale: In COPD, the destruction of elastin leads to loss of
lung recoil and obstructed airflow during expiration.

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